CN217507551U

CN217507551U - Battery box

Info

Publication number: CN217507551U
Application number: CN202122037611.1U
Authority: CN
Inventors: 温金辉; 王建立; 王新锋
Original assignee: Baoli New Energy Technology Co ltd
Current assignee: Baoli New Energy Technology Co ltd
Priority date: 2021-08-26
Filing date: 2021-08-26
Publication date: 2022-09-27
Anticipated expiration: 2031-08-26

Abstract

The utility model discloses a battery box, which is used for accommodating a battery module and comprises a box body and a box cover covered on the box body; a plurality of lower bolt bulges with lower bolt holes are arranged on one side of the inner side of the box body close to the box cover, upper bolt bulges which correspond to the lower bolt bulges one by one and are provided with upper bolt holes are arranged at one end of the inner side of the box cover close to the box body, a sealing bolt is arranged in each lower bolt hole, and a threaded sleeve matched with the sealing bolt is embedded in each upper bolt hole; the outside of box still is equipped with the fixed slot down, and the outside of case lid is equipped with the last fixed slot that corresponds with the fixed slot down, and the fixed slot down is used for placing jointly with last fixed slot and bindes fixed bandage with box and case lid. Compared with the prior art, beneficial effect lies in: the lower fixing groove and the upper fixing groove for installing the binding belt are respectively formed in the outer side of the box body and the outer side of the box cover, so that the number of used bolts can be effectively reduced, the time for locking screws is shortened, and the assembling performance of the battery box is improved.

Description

Battery box

[ technical field ] A method for producing a semiconductor device

The utility model relates to a battery technology field, specificly relate to a battery box.

[ background of the invention ]

At present, because lithium ion battery has the voltage height, the capacity is big, small, the quality is light, advantages such as operating temperature scope is wide, by the wide application in electric vehicle field, electric vehicle generally adopts the battery module to drive, the battery module adopts secondary battery to constitute usually, can the battery produce a large amount of heats when using, if the battery module current abnormity then leads to the high temperature easily, thereby arouse the incident, consequently, the battery module need install the operating condition that the protection shield monitored the battery after being in groups, and control the operating condition of battery according to its operating condition, in order to avoid the emergence of incident.

In the prior art, the battery module usually fixes the protection board on the battery box, which not only needs a large space but also is inconvenient to connect the protection board with the battery module. Meanwhile, in order to improve the waterproof and dustproof performance and mechanical strength of the battery box, the battery box is usually sealed and fixed through bolts, and the number of the bolts is large, so that the battery box is not favorable for assembly and disassembly.

In view of the above, it is desirable to provide a battery box to overcome the deficiencies of the prior art.

[ Utility model ] content

The utility model aims at providing a battery box aims at improving the equipment performance of battery box.

In order to achieve the above object, the present invention provides a battery box for accommodating a battery module, comprising a box body and a box cover covering the box body; a plurality of lower bolt bulges with lower bolt holes are arranged on one side of the inner side of the box body close to the box cover, upper bolt bulges which correspond to the lower bolt bulges in a one-to-one mode and are provided with upper bolt holes are arranged at one end of the inner side of the box cover close to the box body, a sealing bolt is arranged in each lower bolt hole, a threaded sleeve matched with the sealing bolt is embedded in each upper bolt hole, and the box body and the box cover are fixed together through the matching of the threaded sleeve and the sealing bolt; the outer side of the box body is further provided with a lower fixing groove, the outer side of the box cover is provided with an upper fixing groove corresponding to the lower fixing groove, and the lower fixing groove and the upper fixing groove are jointly used for placing a binding belt for binding and fixing the box body and the box cover.

As an improvement of the battery box of the present invention, the box body includes a lower bottom wall and a plurality of lower side walls extending from the edge of the lower bottom wall, a lower accommodating space is enclosed between the lower bottom wall and the lower side walls, the lower bolt protrusions are disposed on one side of the lower side walls close to the lower accommodating space, and the lower bolt holes are through holes; the case lid includes the diapire and from a plurality of go up the lateral wall that the edge of diapire extends the formation, go up the diapire with enclose into an accommodating space between the lateral wall, it sets up to go up the bolt arch the lateral wall is close to one side of going up accommodating space, it is the blind hole and is located to go up the bolt arch and be close to the one end of box.

As an improvement of the battery box of the present invention, the box body is rectangular and comprises four lower side walls, and a lower bolt bulge is respectively arranged at the joint of the four lower side walls, and two spaced lower bolt bulges are respectively arranged at the middle parts of two lower side walls which are oppositely arranged; the box cover also comprises four upper side walls, the joints of the four upper side walls are respectively provided with an upper bolt bulge, and the middle parts of the two oppositely arranged upper side walls are respectively provided with two spaced upper bolt bulges.

As an improvement of the utility model, the lower fixing groove is the U font and centers on the middle part of box, the quantity of going up the fixing groove be two and set up respectively on two relative last lateral walls with the both ends of lower fixing groove align the intercommunication.

As an improvement of the utility model, the both sides of every upper fixing groove are equipped with one respectively and go up the bolt arch, the lower fixing groove is equipped with one respectively and descends the bolt arch in the both sides of every one end.

As an improvement of the utility model, the lower side wall is kept away from the one end of diapire has seted up sealed annular down, it keeps away from to go up the lateral wall the one end of going up the diapire is seted up and is closely matched with sealed annular sealed protruding.

As an improvement of the battery box, the sealing ring groove is internally provided with a butt for sealing the convex sealing ring.

As an improvement of the utility model, the case lid is still inlay on the upper bottom wall and be used for connecting the charge-discharge plug of battery module, just the sunken formation of one end of upper bottom wall is used for inlaying the step of charge-discharge plug

Compared with the prior art, the utility model discloses battery box's beneficial effect lies in: the lower fixing groove and the upper fixing groove for mounting the binding belt are respectively formed in the outer side of the box body and the outer side of the box cover, so that the number of used bolts can be effectively reduced, the time for locking screws can be effectively shortened, and the assembling performance of the battery box is improved.

[ description of the drawings ]

Fig. 1 is an exploded perspective view of the battery pack provided by the present invention.

Fig. 2 is an exploded perspective view of the battery module shown in fig. 1.

Fig. 3 is an exploded perspective view of one of the battery modules shown in fig. 1.

Fig. 4 is an exploded perspective view of another battery assembly shown in fig. 1.

Fig. 5 is a perspective view of the third electrical connector shown in fig. 1.

Fig. 6 is a perspective sectional view of the case shown in fig. 1.

Fig. 7 is a perspective cross-sectional view of the cover shown in fig. 1.

[ detailed description ] A

In order to make the objects, technical solutions and advantageous technical effects of the present invention more clearly understood, the present invention is further described in detail with reference to the accompanying drawings and the following detailed description. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration only and not by way of limitation.

Referring to fig. 1 to 5, the present invention provides a battery pack 100, wherein the battery pack 100 includes a battery module 1 and a battery box 2 for accommodating the battery module 1.

In the embodiment of the present invention, the battery module 1 includes two battery modules 12 and a protection plate module 13 stacked up and down.

Every battery pack 12 includes two mounts 121 and a plurality of battery cells 122 that are fixed in between two mounts 121 and are the matrix arrangement, and every mount 121 is including being used for fixing battery cell 122's bottom plate 1211 with a plurality of certainly the curb plate 1212 that the edge extension of bottom plate 1211 formed is equipped with on one curb plate 1212 of every mount 121 and is used for the rigid coupling protection shield assembly 13's installation department 1213, just protection shield assembly 13's both ends respectively with an installation department 1213 fixed connection of battery pack 12, be equipped with a plurality of limiting plates 1214 that are used for butt battery box 2 inner wall on at least one mount 121's the curb plate 1212, make battery pack 12 with form between the inner wall of battery box 2 and be used for placing protection shield assembly 13's space.

In the present embodiment, each bottom plate 1211 is formed with a plurality of fixing holes 1215 for fixing one end of each corresponding battery cell 122, each side plate 1212 on the lowermost fixing frame 121 is formed with at least two limiting plates 1214, and the side plate 1212 may be arc-shaped and located between two adjacent battery cells 122.

Further, in order to make the two battery assemblies 12 have sufficient mechanical strength after being stacked up and down, each battery assembly 12 is provided with a plurality of limiting posts 1216 abutting and matching one by one on the sides of the two corresponding bottom plates 1211 close to each other, so that the weight of the single battery 122 is fully pressed on the corresponding fixing frame 121, where each limiting post 1216 is disposed between four adjacent fixing holes 1215 to avoid the limiting posts 1216 interfering with the installation and fixation of the single battery 122.

In this embodiment, the battery module 1 further includes a plurality of screws 15, the screws 15 penetrate through the two battery modules 12 and the separator 14 and fix the two battery modules 12 and the separator 14 together, and for this purpose, the stopper 1216 is hollow and forms a first through hole 1217 through which the screw 15 penetrates.

Furthermore, each battery assembly 12 further includes a plurality of first electrical connecting members 124 and a plurality of second electrical connecting members 125 for electrically connecting the corresponding single batteries 122, and the first electrical connecting members 124 and the second electrical connecting members 125 are disposed on the sides of the two corresponding bottom plates 1211 that are away from each other, a partition plate 14 is further disposed between the two battery assemblies 12, a third electrical connecting member 141 for electrically connecting the two battery assemblies 12 is sleeved on the edge of the partition plate 14, and a plurality of second through holes 142 for the screws 15 to pass through are further formed in the partition plate 14.

Specifically, each battery assembly 12 connects the corresponding single batteries 122 in series row by row through the corresponding first electrical connector 124, wherein one row of single batteries 122 in the two rows of the first and the last single batteries 122 is connected in parallel through the second electrical connector 125 to form a positive electrode or a negative electrode of the battery assembly 12, and the other row of single batteries 122 is connected in series with the other battery assembly 12 through the third electrical connector 141, so that the positive and negative electrodes of the two adjacent rows of single batteries 122 in each battery assembly 12 face in opposite directions.

In this embodiment, the first electrical connector 124, the second electrical connector 125, and the third electrical connector 141 may be made of aluminum plates, which have good electrical conductivity and low density, and are beneficial to lightweight design. The second electrical connector 125 is L-shaped and includes a conductive part 1251 connecting a row of single batteries 122 in parallel and a wiring part 1252 serving as a positive output or a negative output; the third electrical connector 141 is folded by an aluminum plate to form two connection portions 1411 electrically connected to the two battery modules 12, respectively.

Meanwhile, the first electrical connector 124 and the third electrical connector 141 are both electrically connected to the protection plate assembly 13, so that the protection plate assembly 13 can collect information of temperature, voltage and current of each battery cell 122, thereby performing an overcurrent protection function on the battery module 1. For this purpose, the protection plate assembly 13 is provided with a wire harness (not shown) connecting the first electrical connector 124 and the third electrical connector 141, and one side edges of the first electrical connector 124 and the third electrical connector 141 are respectively provided with a first collecting part 1241 and a second collecting part 1413 for connecting the wire harness.

Further, the battery module 1 further includes a connecting assembly 16, the connecting assembly 16 is used for leading out positive and negative poles of the battery module 1 so as to electrically connect the battery pack 100 with other charging and discharging devices, in this case, for the convenience of placing the connecting assembly 16, the number of rows of the unit batteries 122 in the battery assembly 12 located below is greater than that of the unit batteries 122 in another battery assembly 12, so that an installation area 141 for installing the connecting assembly 16 is left at one end of the partition plate 14, and correspondingly, the second electrical connectors 125 on each battery assembly 12 are arranged at one end of the corresponding battery assembly 12 close to the installation area 141, so as to facilitate the connecting assembly 16 to connect and lead out the wiring portions 1252 of the two second electrical connectors 125.

To sum up, the utility model provides a battery module 100 is through setting up two battery pack 12 that battery cell 122 quantity is different for the installation region 141 that is used for installing coupling assembling 16 can be vacated to baffle 14 between two battery pack 12, is used for the installation through being equipped with in one side of mount 121 again the installation department 1213 of protection shield subassembly 13 makes coupling assembling 16 and protection shield subassembly 13 can convenient and fast install on battery module 100, thereby effectively improves battery module 100's equipment performance, and then can reduce battery module 100's manufacturing cost.

In the embodiment of the present invention, please refer to fig. 1, fig. 6 and fig. 7 simultaneously, the battery box 2 includes a box body 21 and a box cover 23 covering the box body 21.

A plurality of lower bolt bosses 2123 with lower bolt holes 2122 are arranged on one side of the inner side of the box body 21 close to the box cover 23, upper bolt bosses 2324 which are in one-to-one correspondence with the lower bolt bosses 2123 and are provided with upper bolt holes 2322 are arranged at one end of the inner side of the box cover 23 close to the box body 21, a sealing bolt (not shown) is arranged in each lower bolt hole 2122, a threaded sleeve 2323 matched with the sealing bolt is embedded in each upper bolt hole 2322, and the box body 21 and the box cover 23 are fixed together through matching of the threaded sleeve 2323 and the sealing bolt.

A lower fixing groove 214 is further formed in the outer side of the box body 21, an upper fixing groove 234 corresponding to the lower fixing groove 214 is formed in the outer side of the box cover 23, and the lower fixing groove 214 and the upper fixing groove 234 are used together for placing a strap (not shown) for binding and fixing the box body 21 and the box cover 23, so that firmness of the box body 21 and the box cover 23 is improved.

It can be understood that by providing the lower fixing groove 214 and the upper fixing groove 234 for mounting the binding band on the outer side of the case body 21 and the outer side of the case cover 23, respectively, the number of the upper bolt bosses 2324 and the lower bolt bosses 2324 can be effectively reduced, so that the time for locking the screws can be effectively reduced, thereby improving the assembling performance of the battery case 2.

Meanwhile, the lower bolt bosses 2123 and the lower bolt bosses 2324 can also play a role of reinforcing ribs, so that the thicknesses of the lower side wall 212 and the upper side wall 232 can be reduced, and the lightweight design of the battery box 2 is facilitated.

More specifically, the box body 21 includes a lower bottom wall 211 and a plurality of lower side walls 212 extending from edges of the lower bottom wall 211, a lower receiving space 213 is defined between the lower bottom wall 211 and the lower side walls 212, the lower bolt bosses 2123 are disposed on one side of the lower side walls 212 close to the lower receiving space 213, the lower bolt holes 2122 are through holes, for this purpose, top ends of the lower bolt bosses 2123 are flush with top ends of the lower side walls 212, and bottom ends of the lower bolt bosses 2123 are connected to the lower bottom wall 211. The structure of the box cover 23 is substantially the same as that of the box body 21, specifically, the box cover 23 includes an upper bottom wall 231 and an upper side wall 232 extending from edges of a plurality of the upper bottom walls 231, an upper receiving space 233 is defined between the upper bottom wall 231 and the upper side wall 232, the upper bolt protrusion 2324 is disposed on one side of the lower side wall 212 close to the upper receiving space 233, and the upper bolt hole 2322 is a blind hole and is located at one end of the upper bolt protrusion 2324 close to the box body 21. The battery module 1 is received in the lower receiving space 213 and receives all or part of the battery assembly 12 positioned at the top in the upper receiving space 233.

In the present embodiment, the box body 21 is shaped like a rectangular parallelepiped and includes four lower sidewalls 212, and one lower bolt protrusion 2324 is disposed at the joint of each of the four lower sidewalls 212, and two spaced lower bolt protrusions 2324 are disposed at the middle of each of the two oppositely disposed lower sidewalls 212, and correspondingly, the box cover 23 also includes four upper sidewalls 232, and one upper bolt protrusion 2324 is disposed at the joint of each of the four upper sidewalls 232, and two spaced upper bolt protrusions 2324 are disposed at the middle of each of the two oppositely disposed upper sidewalls 232.

Further, the lower fixing groove 214 is U-shaped and surrounds the middle portion of the box body 21, that is, the lower fixing groove 214 has two ends respectively disposed at the middle portions of the two opposite lower sidewalls 212 and a middle portion disposed at the middle portion of the lower bottom wall 211, and correspondingly, the number of the upper fixing grooves 234 is two and the two opposite upper sidewalls 232 are respectively disposed to be aligned and communicated with the two ends of the lower fixing groove 214.

Further, in order to improve the waterproof and dustproof performance of the battery box 2, a sealing ring groove 2121 is formed in one end of the lower side wall 212, which is far away from the lower bottom wall 211, and a sealing protrusion 2321, which is tightly fitted with the sealing ring groove 2121, is formed in one end of the upper side wall 232, which is far away from the upper bottom wall 231, preferably, a sealing ring (not shown) for abutting against the sealing protrusion 2321 is arranged in the sealing ring groove 2121, so as to increase the sealing performance.

Further, the case cover 23 is further embedded with a charge and discharge plug 235 connected to the connecting assembly 16 on the upper bottom wall 231, where one end of the upper bottom wall 231 corresponding to the connecting assembly 16 is recessed to form a step 2324 for embedding the charge and discharge plug 235, on one hand, in order to shorten a distance between the charge and discharge plug 235 and the connecting assembly 16, and on the other hand, the step 2324 may form a wiring space on the battery pack 100 for facilitating use of the charge and discharge plug 235, for example, after the battery pack 100 is installed on an electric vehicle, the electric device on the battery pack 100 may be connected more conveniently through the wiring space formed by the step 2324.

To sum up, the utility model provides a battery box 2 through setting up the inboard at box 21 and case lid 23 respectively with last bolt arch 2324 and lower bolt arch 2324, can increase battery box 2's mechanical strength, sets up lower fixed slot 214 and last fixed slot 234 that is used for installing the bandage respectively in the outside of box 21 and case lid 23 simultaneously for battery box 2 can reduce the quantity of last bolt arch 2324 and lower bolt arch 2324, thereby can effectively reduce the time of locking the screw, and then improve battery box 2's equipment performance.

The invention is not limited to what has been described in the specification and embodiments, and additional advantages and modifications will readily occur to those skilled in the art, such that the invention is not limited to the specific details, representative apparatus, and illustrative examples shown and described herein, without departing from the spirit and scope of the general concept as defined by the appended claims and their equivalents.

Claims

1. The utility model provides a battery box for the holding battery module, its characterized in that: comprises a box body and a box cover covering the box body;

a plurality of lower bolt bulges with lower bolt holes are arranged on one side of the inner side of the box body close to the box cover, upper bolt bulges which correspond to the lower bolt bulges in a one-to-one mode and are provided with upper bolt holes are arranged at one end of the inner side of the box cover close to the box body, a sealing bolt is arranged in each lower bolt hole, a threaded sleeve matched with the sealing bolt is embedded in each upper bolt hole, and the box body and the box cover are fixed together through the matching of the threaded sleeve and the sealing bolt;

the outer side of the box body is further provided with a lower fixing groove, the outer side of the box cover is provided with an upper fixing groove corresponding to the lower fixing groove, and the lower fixing groove and the upper fixing groove are jointly used for placing a binding belt for binding and fixing the box body and the box cover.

2. The battery box of claim 1, wherein the box body comprises a lower bottom wall and a plurality of lower side walls formed by extending from edges of the lower bottom wall, a lower accommodating space is defined between the lower bottom wall and the lower side walls, the lower bolt protrusions are arranged on one sides of the lower side walls close to the lower accommodating space, and the lower bolt holes are through holes; the case lid includes the diapire and from a plurality of go up the lateral wall that the edge of diapire extends the formation, go up the diapire with enclose into an accommodating space between the lateral wall, it sets up to go up the bolt arch the lateral wall is close to one side of going up accommodating space, it is the blind hole and is located to go up the bolt arch and be close to the one end of box.

3. The battery box according to claim 2, wherein the box body is rectangular and comprises four lower side walls, and a lower bolt bulge is respectively arranged at the joint of the four lower side walls, and two spaced lower bolt bulges are respectively arranged at the middle parts of the two lower side walls which are oppositely arranged; the box cover also comprises four upper side walls, the joints of the four upper side walls are respectively provided with an upper bolt bulge, and the middle parts of the two oppositely arranged upper side walls are respectively provided with two spaced upper bolt bulges.

4. The battery box according to claim 1, wherein the lower fixing groove is U-shaped and surrounds a middle portion of the box body, and the number of the upper fixing grooves is two and two opposite upper sidewalls are respectively provided to be aligned and communicated with both ends of the lower fixing groove.

5. The battery box according to claim 4, wherein each of the upper fixing grooves is provided at both sides thereof with one upper bolt protrusion, and the lower fixing groove is provided at both sides of each end thereof with one lower bolt protrusion.

6. The battery box of claim 2, wherein the end of the lower sidewall away from the lower bottom wall is formed with a sealing ring groove, and the end of the upper sidewall away from the upper bottom wall is formed with a sealing protrusion tightly fitted with the sealing ring groove.

7. The battery box according to claim 6, wherein a seal ring is provided in the seal ring groove for abutting against the seal projection.

8. The battery box of claim 1, wherein the box cover is further provided with a charging and discharging plug embedded in the upper bottom wall for connecting the battery module, and one end of the upper bottom wall is recessed to form a step for embedding the charging and discharging plug.